Under scrutiny for handing over user information to the U.S. government, Facebook and Microsoft each disclosed figures on data requests from U.S. government and law enforcement entities–though in a form that shed little light on how many of the information transfers were associated with intelligence agencies.

Google, however, said it wouldn’t follow the lead of the other two tech giants, and questioned the value of disclosures without more detailed information.

Facebook late Friday for the first time disclosed that it got between 9,000 and 10,000 requests from all government entities in the U.S. in the second half of 2012. That number includes all requests–from local, state and federal authorities as well as classified national security-related requests.

Microsoft later Friday said it received 6,000 to 7,000 requests for data in the second half of the year, from all U.S. government and law-enforcement entities in the U.S.

In corporate blog posts, both Microsoft and Facebook indicated they weren’t satisfied with the level of detail the U.S. government allowed them to provide publicly. Microsoft, for example, already has previously disclosed its 2012 volume of U.S. and worldwide law enforcement requests.

It’s not possible to determine how many of requests are associated with agencies such as the National Security Agency, or the secret U.S. court that handles classified foreign-surveillance orders under a law known as the Foreign Intelligence Surveillance Act, or FISA.

“We continue to believe that what we are permitted to publish continues to fall short of what is needed to help the community understand and debate these issues,” John Frank, Microsoft deputy general counsel, said in a blog post Friday evening.

In a statement after Microsoft and Facebook released their data, a Google spokesman said the company has “always believed that it’s important to differentiate between different types of government requests,” referring to requests for data in criminal cases, and data requests stemming from national security-related, classified orders.

“Lumping the two categories together would be a step back for users,” the Google spokesman added in the statement. “Our request to the government is clear: to be able to publish aggregate numbers of national security requests, including FISA disclosures, separately.”

Like Microsoft, Google has previously disclosed the total number of government and law-enforcement data requests it received last year, excluding the secret surveillance orders the companies previously weren’t permitted to acknowledge publicly.

Facebook General Counsel Ted Ullyot said the Facebook requests in the second half of last year sought data about somewhere between 18,000 and 19,000 individual Facebook accounts. He pointed out that the total amounts to a tiny fraction of 1% of the company’s 1.1 billion monthly active users worldwide.

“We hope this helps put into perspective the numbers involved, and lays to rest some of the hyperbolic and false assertions in some recent press accounts about the frequency and scope of the data requests that we receive,” Ullyot said in a statement.

Facebook, Google and other U.S. Web companies have been under fire since last week’s news reports on U.S. government programs that require the companies to turn over user data, such as texts of emails and online photos, if required by orders from a secret U.S. court.

Since those reports, the Web companies have scrambled to deflect accounts of their deep cooperation with U.S. government surveillance efforts on foreigners. Friday evening’s disclosures leave murky the questions of how often the companies are ordered to turn over user information, and how often the companies deflect or fight those information orders.

A person familiar with the matter said Facebook executives are still pushing government officials to allow them to release more information about classified orders. They are also requesting permission to disclose the total number of users that may have been impacted by these orders.

A person with knowledge of the matter said in a “substantial number” of the data requests disclosed Friday, Facebook provided only basic user information, name and the length of time on the service. Facebook complied at least partially with 79% of these requests during that period, that person said.

For more than week, the company, led by Ullyot, lobbed more than 100 calls to White House, Department of Justice, and intelligence officials, “aggressively” asking them for permission to release data, this person added.

Government officials also got calls from Facebook’s CEO Mark Zuckerberg and COO Sheryl Sandberg, who has deep ties to Washington as a former chief of staff to the Secretary of Treasury.

Note: This post was updated to include information from Microsoft and Google.